I am hard of hearing and lip read to assist with following conversations.

I absolutely hate video conferencing tools. The sound is horrible and live captions are often incorrect. Very few people speak clearly enough for accurate captioning.

I prefer to read and be shown rather than being told. I prefer email, and avoid voicemail.

So if you are trying help your team mate, simply focus on alternatives to talking and listening. The internet is great for learning since so much good material is available in written form.